The colored wire is just varnished wire and can be either alum. or copper, try clipping a little and check the middle. First off, every yard will classify it differently. The natural looking wire goes as #1 here, anything colored is #2. I just got 2.85 a lb for my copper tubing, they called it #2 also. Looks to me that that all would be #2 until you get to the house wire, that could go as #1.
P & M Recycling - Specializing in E-Waste Recycling. 
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